Episode 13. Titles:
- The Death of a Hero
- Jack's brother is gone.

It's right. In this episode I almost cried at the end! Why did Tony have to die?? This episode was basically this. I'll only post here the most important issues:
- Lynn McGuill and a security guard died while saving the others from the nerve gas.
- A woman named Karen Hayes is going to control CTU. We understand that she will be replacing some personnel.
- Christopher Henderson killed Tony Almeida and ran away.
This episode ends with Jack crying for Tony's death.

Tony Almeida
He was the only character alive that appeared in all 5 seasons. (Kim didn't enter the 4th season).
1st season: Not a very nice person. He was jealous of Jack, because of Nina Myers.
2nd season: A more friendly one, especially to Jack. They help each other in a lot of missions. He already knows Michelle in this season.
3rd season: Tony's now the director of CTU LA. He's married with Michelle and is Jack Bauer's best friend. At the end of this season he gets arrested for jeopardizing the mission while trying to save Michelle.
4th season: Tony is now free, but Michelle left him. He saves Jack from very dangerous situations (without working at CTU). At the end of this season he rejoins Michelle and they decide to live a life totally disconnected from CTU.
5th season: He has a prosperous life with Michelle at the start of the season. Unfortunately, Michelle dies and Tony is caught in an explosion. He wakes up some hours later. He tries to kill Henderson for killing his wife, but he realize he really doesn't want to kill him. In this moment of doubt Christopher kills Tony Almeida. He dies in Jack's arms, saying that's better this way, because Michelle's already dead.